University of Illinois Urbana-Champaign

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Showing 2251–2280 of 5,770 items
Thumbnail for Year-book for 1908
Year-book for 1908
Illinois State Geological Survey

Thumbnail for Illinois clays and shales as mortar mix,
Illinois clays and shales as mortar mix,
Hursh, Ralph Kent; Lamar, John Everts; Grim, Ralph E.